Communicating system



March. 22, 193s.

s. B. WILLIAMS COMMUNICATING SYS TEM Filed Feb. 19, 1936 8 Sheets-Shea?I l March 22, 1938. s. B. WILLIAMS COMMUNICATING SYSTEM Filed Feb. 19I 1936 8 Sheets-Sheet N @Px BGN ATi-ORNE? March 22, 1938. s. B. WILLIAMS l COMMUNICATING SYSTEM Filed Feb. 19, 1956 8 Sheets-Sheet 4 ril QWSSR MQSQ 1 N nnUnD nun .NOW

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8 sheets-sheet v Filed Feb. 19, 1936 /N VEN TOR Bys. WML/AMS March 22, w38., s. B. WILLIAMS COMMUNICATING SYSTEM Filed Feb. 19, 1936 8 Sheet/s-She'etI 8 Patented Mar. 22, 193s UNITED STATES PATENT OFFICE COMlVIUNICATING SYSTEM Application February 19, 1936, Serial No. 64,691

12 Claims.

This invention relates to communication systems and more particularly to one intended for the simultaneous establishment of telephone and recording connections with switches controlled by key-controlled dial senders. One application of this invention has` been adapted for use in the purchase and sale of securities and, accordingly, would replace the manual facilities now provided for the execution of such transactions in places like the New York Stock Exchange, for instance. It is understood, however, that the invention is not limited to the specific structure hereinafter described by way of example but, due to its flexibility, can be easily adapted by any one skilled in the switching art to a variety of uses where transactions at a distance must be secretly and expeditiously conducted by conversation between the parties involved and the substance of the transactions recorded when the transaction takes '26 place.

Briefly, my invention comprises a communication system in which each station of a rst group of stations is equipped with `a telephone instrument, a dial, a telegraph transmitter and a tele- 2'5 graph receiver. Each of theseV stations is provided with a private line and another line to either of which the station is available for calling purposes. A second group of stations is provided at the location` where the business of buy- 30' ing and selling takes place and each of the stations of this second group is equipped with a handset telephone and a telegraph receiver. Each of these telephones isy not equipped with the usual ringer but is provided, instead, with a key-operated dialing deviceor other equivalent means, so that the telephone cannot be used unless flrst operated by a key.

In the proximity of` this second group of stations an annunciator or oor indicator is pro- 40 vided which has a separate visual signal for each one of the persons authorized to use the second group of stations. Each of these signals can be set, or operated, over another private line from each of the rst stations by the operation of the 45 key provided thereat, and each signal identifies the agent or authorized representative of the station that controls the operation of the signal. When a signal is operated, the person identified by it understands that he must communicate 50 with the station that called him, which he can do by going to any station in the second group and inserting the key in the dial apparatus of the station. An impulse train is generated by the dial apparatus which is effective in setting a number of selective SWtQhCS beWeQrl the Calling station in the second group and the private line of the calling station in the rst group and when the connection is answered, the signal is retired. This connection comprises a telephone circuit over which the parties may converse, and a tele- 5 graphicI connection between the printer receiving equipment atA the station of the second group and the transmitting equipment at the station of the first group. The communicating parties may now orally discuss business over the telel0 phone connection and confirm it over the telegraph connection.

Besides the foregoing arrangement between the station of the first group and the stations of the second group, there are two other groups of 15 stations, a third and a fourth. The third group comprises individual stations having a regular telephone and dial associated with a receiving printer. Through this station, a person may, through usual dial responsive switches, reach any station in the rst group, a distant operator, a mechanical announcing system, or whatever outlet or source of information is placed within reach of the common equipment. The object of the receiving printer at the station of the third group is, in thiscase, to make it possible when connection is made with a station of the first group to confirm an order or the substance of the conversation between the parties. The fourth group of stations comprises individual stations having similar equipment to the stations of the second group but, in addition, each is provided with a telegraph transmitter for sending reports to the stations of the second group.

As applied to a stock exchange and to the buying and selling of securities therein, the inventionl as briey outlined above makes it possible to eliminate many of the present day wasteful practices incidental to manual practices and provides for the speedy and secret transfer of orders directly from the brokers ofi-ice to the floor memberwho is to execute the order. At present, the trading floor proper in the New York Stock Exchange, for example, is surrounded with brokers booths around the walls. No one except exchange members and stock exchange employees is permitted on the trading floor during trading, members clerks being required to walk around the edge of the trading floor to go to their respective booths. In the system of my invention, the members booths are replaced by stations of the second, third and fourth group as above described and in which the stations of the second group are reserved for the exclusive use of the members themselves, each of them being provided with a special dial key with which to set up a secret connection over a private channel from any of these stations to the brokers oilice identified by the key. Each of the brokers oflices, of course, comprises a station in the first group of stations.

The transaction of business between a brokers oflice and the stock exchange member can, with this arrangement of my invention, be conducted directly between broker and member and with relative simplicity. When, for instance, a broker has an order he wishes to execute, he operates the key which causes the setting of the iioor indicator at the exchange. The member of the exchange who represents the broker, seeing his identifying number displayed on the indicator, knows that he is wanted by the brokerage office and proceeds immediately, or as soon as possible, to a station in the second group, which may aptly be termed members station, and, by inserting his key into the telephone set, causes selective equipment to establish a connection to the brokers oice, after which the order is transmitted over telephone from the oflice and keyed on the transmitter, said order being, of course, recorded on the receiving equipment at the members station.

The other two groups of stations at the stock exchange, that is, the third and fourth and which may be termed common stations and report stations may be used by all exchange members alike for purposes of general communication and confirmation of orders.

A clearer conception of the scope and purpose of the invention may be obtained from the following description and attached drawings, in which Fig. 1 shows a members station and line-linder;

Fig. 2 shows the first and second selectors;

Fig. 3 shows the connector, the brokers line and the brokers station;

Fig. 4 shows the common station, the calling side of the brokers station and the line-finder equipment available to each;

Fig. 5 shows the report station;

Fig. 6 shows, schematically, the relation between the rst selector stages available, respectively, to the common station and the brokers line and the second selector stages, with means for completing the several connections to different destinations;

Fig. '7 shows a connector in thetrain for completing a connection to a brokers line;

Fig. 8 shows the trunking layout of my invention; while Fig. 9 shows the manner in which the several gures are to be arranged in order to completely disclose the invention.

Before considering the detailed operations involved in establishing connections between the various types of stations on the oor of the stock exchange and the different other stations in and out of the exchange, attention is directed to Fig. 8 which shows the trunking layout of the invention as a whole. From an inspection of this figure it will be observed that there are three diiferent types of stations on the oor of the exchange, namely, a member station, a report station and a common station.

Of the rst, a number of them are conveniently located around the trading center of the exchange, are equipped with a telephone set having a key controlled dial and a teletype printer or similar equipment, and are accessible to members only, each of whom is provided with a dial key that can operate the dial to establish a connection only with his own brokers office. pose, the switching train accessible to the members stations at the line-finder terminal banks consists of a suitable number of rst and second selectors and connectors. On the terminal banks of the connectors appear the brokers lines which may be called from the several members stations.

The report station, of which a number are also` conveniently distributed around the trading floor, comprises the usual dial telephone instrument and a regular teletype transmitter and receiver or similar equipment, an-d is accessible to all for establishing connections, by the dialing of appropriate code numbers: 1) to the exchange Operator; (2) Vto any of the brokers lines; and (3) to the Ticker Delay announcer. The trunks extending to the operators position are, of course, wired to the last or zero level of the first selector banks and extend directly therefrom to the operators position, making it thus possible to reach the operator from the report station by simply dialing the digit 0. The fifth, sixth and seventh bank levels of the rst selector extend to second selectors which have access to a group of connectors having their terminal banks extending to the various brokers lines soI that any brokers line may be reached from any report station by dialing the number of the line desired, which number has 5, 6 or '7 as its first digit. 'I'he terminals of the second bank level extend directly to the Ticker Delay equipment so that by dialing the digit 2, it is possible to learn how far the ticker is behind floor operations.

The common station consists of the usual dial telephone instrument and is available to all in the exchange. The second bank level of terminals on the first selectors available to the common station ls reserved for trunks extending directly to the Ticker Delay equipment. The fth, sixth and seventh bank levels extend to second selectors which can reach the brokers lines, the eighth and ninth bank levels extend to second selectors which can reach the quotation announcer mechanism so that by dialing the code of a particular security from the common station, a report is received on the latest quoted price of said security, while the zero bank level of the selector is reserved for trunks extending to the operators position.

In the arrangement of my invention, each of the brokers oiices can reach every other brokers oce as well as the Ticker Delay mechanism, the quotation announcer mechanism and the operators position. In order to provide this service, another switching train is provided from the brokers line-iinder banks which can be extended to any of the desired outlets by dialing the code number assigned to each of said outlets, which code numbers may be the same as those to be used from any of the floor stations.

The exchange is further provided with a visual floor indicator which is controlled from each of the brokers oflices to light up a number which identifies the member who represents the broker on the floor of the exchange so that when a particular number is flashed on the indicator, the member thus identified knows that he is to call the brokers oilice which he can do from any of the exchange stations.

Having thus outlined the general arrangement of the various elements of my invention, I will now describe the details of its operation by rst For this purp tracing the establishment of a call from a members `station shown in Fig. l to the brokers station 321, shown in Fig. 3.

, When' a member, or his representative in the exchange, desires to secretly communicate with his brokers oliice, he -goes toi any members telephone station, such as station |00, and removes the receiver from the hook. A circuit is then completed for line relay |02 extending from grounded battery through the left winding of said relay, left outer contacts of cut-off relay |03, conductor H6, station line loop, conductor ||5, left inner contacts of relay |03, right winding of relay |02 to ground. Line rel-ay |02 operates and through its left front contact connects grounded battery through resistance I4 to the line test terminal |26, and closes an obvious circuit for group relay |04 from ground through its right contacts. Relay |04 operates, connects ground through its right contacts toy the No. 4 segment of commutator |21 to mark the vertical bank of terminals in which the calling line is located and, through its left contacts, completes a circuit for relay |01 extending from ground through its left contacts, conductor |40, bottom normal contacts of relay |08, winding of relay |01 to grounded battery. Relay |01 operates and through its bottom outer contacts, connects ground to conductor |28 whereupon a circuit is completed for relay |09 extending from ground on said conductor, interrupter contacts of vertical magnet ||0, right outer contacts of rotary magnet 2, lower winding of relay |09 to grounded battery over the top middle contacts of relay |08. Relay |09 operates and completes a circuit for operating vertical magnet |0. This circuit is traced from grounded battery through the top middle contacts of relay |08, winding of magnet ||0, bottom outer contacts of relay |06, contacts of relay |09, conductor |28 to ground on the lower outer contacts of relay |01. Vertical magnet ||0 operates, lifts the brush shaft carrying brushes |29 to |34, inclusive, to the rst level of terminals and operates the vertical orfnormal springs |48. The operation of vertical magnet ||0 causes its interrupter contacts to open, whereupon the circuit of said magnet is opened and also that o-f relay |09 causing both of them to release. The previously described circuit of relay |09 is now reclosed and, with the closing of its contacts, the circuit of magnet ||0 is reestablished to step the brushes to the next level of terminals, the operations continuing until the brushes have-reached the fourth level of terminals and brush |34 is in contact with the fourth segment of commutator |21, at which time a locking circuit is provided for relay |09 extending from ground through the right contacts of relay |04, segment 4 of commutator |21, brush |34, low-er winding of relay |06, right contacts of rotary magnet H2, lower winding of relay |09, to grounded battery on the topi middle contacts of relay |08. This circuit holds relay |09 in an operated position. The operation of relay |06 opens the stepping circuit of vertical magnet ||0 and completes a circuit for rotary magnet |2 extending from grounded battery through the Winding of said magnet, bottom outer front contacts of relay |06, contacts of relay |09, conductor |28 to ground on the bottom out/er contacts of relay |01. Rotary magnet ||2 operates and rotates the brush shaft one step in a clockwise rotary direction so as to bring brushes |29 to |33, inclusive, in contact with the rst set of terminals in the fourth level. As the brush shaft rotates in the horizont-al plane, brush |34 is disengaged from segment 4 of oommutator |21 thereby opening the holding circuit of relay |09, and the operating circuit ofV relay |06. Neither relay, however, releases since relay |09 now holds over the outer contacts of rotary magnet |2 and the interrupter contacts of vertical magnet ||0 to ground on conductor |28 while relay |06 holds in a locking circuit which extends from grounded battery through the top middle contacts of relay |08, winding of vertical magnet H0, upper winding and top contacts of relay |06, to ground on conductor |28. The quantity of current flowing through this circuit, while sufficient to hold relay |06 in an operated position, is not suicient to operate vertical magnet H0.

When rotary magnet ||2 has operated to rotate the brush shaft to the rst set of terminals, the interrupter contact of said magnet is opened whereupon the locking circuit of relay |09 is opened and relay |09 releases, causing thereby the opening of the circuit of the rotary magnet ||2 and its consequent release and the reclosure of its interrupter contacts. A circuit for relay |09 is now completed extending from grounded battery as traced through the lower winding of relay |09, interrupter contacts of rotary magnet ||2, interrupter contacts of vertical magnet ||0 to ground on conductor |28. Relay |09 reoperates and once again completes the previously traced circuit for the rotary magnet I| I2, causing this magnet to operate and rotatively step the brush shaft to the next set of terminals, causing the brushes to contact therewith, whereupon, with the opening of the interrupter contacts of the rotary magnet, relay |09 will again release and cause the release of the rotary magnet. These operations continue and cause successive steps to be taken by the brush shaft until the brushes come into contact with that group of terminals connected to the calling members station |00, the test terminal |26 of which is extended by brush I3| to the lower winding of relay |05, causing a circuit to be completed which extends from grounded battery through resistance H4, left contacts of relay |02, terminal |26, brush I3|, lower winding of relay |05, top outer back contacts of relay |08, upper winding of relay |09, bottom inner contacts of relay |01, to ground. At the same time a parallel circuit is closed to the same ground for cut-off relay |03 extending from grounded battery through the winding of said relay to resistance ||4 thereby operating this relay. In the rst branch of the circuit, relay operates sufficiently to close its locking contacts to its upper windin-g which is, therefore, energized in a circuit from grounded battery through this winding and locking contacts, front contact of rotary magnet ||2, contacts of relay |09, conductor |28 to ground. Relay |05 now fully operates on both circuits, extends brushes |29, |30, |32 and |33 to the trunk conductors |36, |31, |38 and |39, respectively, and completes a circuit for relay |08 which extends from grounded battery through its upper winding, bottom front outer contacts of relay |05, and top front contacts of vertical off-normal springs |48 to ground. Relay |08 operates, extends conductor |40 over its bottom contacts to the next idleline-ilnder switch should relay |04 remain operated after the nding of station |00 by the line-finder switch shown in Fig. 1 as the result of some other members station initiating a call and accessible through the same line-finder switch group, opens the circuit of relay |01 which releases after an interval, completes a parallel path for the locking circuit of relay |05 through the upper winding and upper locking contacts of said relay, upper inner contacts of relay |08, conductor |4| to ground on the bottom contacts of relay 206 as explained hereinafter, extends the locking circuit of cut-off relay |03 over the bottom inner contacts` of relay |05, top outer front contacts of relay |08, conductor |4| to the same ground on the contacts of relay 206, and further opens the circuit of relay |09 which, upon releasing, opens the circuit of relay |06 which also releases.

Relay |01 is made sufliciently slow release so as not to open any of the circuits depending upon the ground connected through its lower contacts until relay 200 is operated as explained hereinafter to connect holding ground to conductor |4|.

With the operation of relay |05 and the extension of brushes |29, |30, |32 and |33 to conductors |36, |31, |38 and |38, respectively, the line is extended to the rst selector 200 which is a switch structure of the step-by-step type and capable of advancing its brushes 223 to 221, inclusive, vertically and rotationally over a bank of terminals in response to line interruptions or pulses.

Hence as soon as relay |05 operates, a circuit is completed for the line relay 20| of the rst selector which extends from grounded battery through its upper winding, No. 4 back contacts of relay 2|2, conductor |39, No. 5 contacts of relay |05, brush |33 and cooperating bank terminal, line conductor ||6, station loop, line con- -ductor |I5, brush |32 and cooperating terminal,

No. 4 contacts of relay |05, conductor |38, No. 3 back contacts of relay 2|2, lower winding of relay 20I, right winding of tone coil 208 to ground. Relay 20| operates and closes the circuit for relay 206, which circuit extends from ground through the bottom outer contacts of relay 2|2, front contacts of relay 20|, winding of relay 206, to grounded battery. Relay 206 operates, connects ground through its bottom contacts to conductor |4| to hold the line-finder after rela-y |01 releases as previously described.

The member is now ready to dial the brokers line number, having received knowledge of the readiness of the apparatus to receive impulses by the reception of dial tone, which is induced in the line circuit through the right winding of coil 208, the left winding of which is connected to a source of tone.

rIhe member dials the brokers line number by inserting the dialing key into the repertory dialing device, which may be of the type disclosed in Patent 1,917,051, issued to L. H. Morin on July 4, 1933, or any other equivalent device operating to produce a definite series of impulses in response to the use of a key individual to said series.

At the first break of the line in response to the operation of the repertory dial |0|, relay 20| releases but relay 206, being slow release, remains operated, so that, for an instant, a circuit path is completed extending from ground through the bottom outer contacts of relay 2 I2, back contacts of relay 20|, top front contacts of relay 206, winding of relay 202, winding of vertical magnet 201, to grounded battery. Vertical magnet 201 operates, moving the selector shaft and brushes 223 to 221, inclusive, one step to the first level of bank terminals. The vertical offnormal springs 2|| are also closed as soon as the brush shaft leaves its normal position and a circuit is then completed for relay 205 extending from grounded battery through the winding of relay 205, top contacts of the Vertical oir-normal springs 2| front contacts of relay 202, to ground on the bottom contacts of relay 206. Relay 205 operates and locks itself over a path through its winding, top contacts of the vertical oir-normal springs 2| l, interrupter contacts of the rotary magnet 2| 3, bottom contacts of relay 205, to ground on the bottom contacts of relay 2| 2 and connects short-circuiting ground from the lower bottom contact of relay 2|2 over its lower contacts to the upper terminal of the Winding of relay 2|2. At the termination of the impulse, relay 20| reoperates and breaks the circuit of relay 202 and vertical magnet 201, allowing the magnet to release preparatory to moving the brush shaft another step. Relay 202, however, is slow-to-release and will not release during the interval between impulses. At the next impulse relay 20| will again release, magnet 201 will again operate and advance the brushes 223-221 to another level of terminals. This action is continued during the transmission of the entire series of impulses characterizing the first digit of the brokers line number, relay 20| intermittently operating and releasing, in turn, causing the brush shaft controlled by the armature of the vertical magnet 201 to move said shaft upwards a corresponding number of steps.

At the end of said rst series of impulses, relay 202 releases and a circuit is completed from grounded battery through the winding of rotary magnet 2|3, top contacts of relay 205, normal contacts of relay 202, to ground on the bottom contacts of relay 206. Rotary magnet 2| 3 operates and rotates the brush shaft to the first set of terminals in the level of terminals to which the brushes have been raised. The operation of rotary magnet 2|3 also causes its contacts to be broken, thereby opening the locking circuit of relay 205, which releases. Relay 205, in releasing, removes the short-circuiting ground from the upper terminal of the winding of relay 2| 2. If, now, the second selector to which the brushes of theflrst selector 200 have just been extended on the first rotary step is free, there will be no ground on guard terminal 228 with which brush 225 is engaged, whereupon a circuit is completed from grounded battery through the winding of relay 205, top contacts of Vertical offnormal springs 2| interrupter contacts of rotary magnet 2|3, winding of relay 2|2, to ground on the bottom contacts of relay 206. Relay 2|2 operates in this circuit but, due to the high resistance of its winding, relay 205 does not 0perate in series with it. Relay 2|2 upon operating, extends the line wires to the brushes 223, 224, 226 and 221. It also breaks the circuit of impulsing relay 20|, which, on releasing, releases relay 206. Relay 206, by virtue of its slow release feature, keeps conductor |4| grounded and relay 2|2 operated until the second selector circuit is operated to connect ground to brush 225 as explained hereinafter.

On the other hand, if the rst set of terminals to which the brushes of the first selector have been connected, are the terminals of a busy second selector, then terminal 228 is grounded. In such a case, the busy ground is extended to brush 225 and thence over the bottom inner back contact of relay 2 2 to keep said relay shortcircuited and therefore unoperated, and also to complete previously described circuits for relay 205 and rotary magnet 2|3 both of Which reoperate. Rotary magnet 2|3 now rotates the brush shaft to the next set of terminals and also releases relay 205, which, on restoring, deenergizes rotary magnet 213 aspreviously described. This cycle of operations is repeated until an ungrounded guard terminal 228 of an idle second selector is reached such as, for example, second selector 250, at which time relay 205 will remain released, stopping the further rotation of the brushes and relay 212 will energize as previously described.

When the first selector 200 has established a connection with an idle second selector 250, the members station line loop is extended to the line relay 201' `over the Nos. 3 and 4 back contacts of relay 212. Relay 201 operates, in turn operating relay 200. At its lower contact, relay 206' connects holding ground to terminal 228 thereby holding relay 212 operated and extending holding ground over the bottom inner contacts of relay 212 to conductor 141. Inasmuch as the second selector 250 is identical with first selector 200 both in structure and in circuit organization, it is believed suicient to say, Without describing further circuit operations in detail, that the second selector responds to the next series of impulses transmitted from the repertory dial 101 and that, in response to this series of impulses, the second selector brushes 229 to 233, inclusive, will be positioned on the first set of idle terminals by the operation of rotary magnet 213 in the row of terminals to which the brush shaft will have been raised by the operation of vertical magnet 201. Each `of the pieces of apparatus in selector 250 has been given a designation similar to the corresponding piece of apparatus in rst selector 200 except that each of said designations has been primed so that, with what has already been said of the operation of the first selector 200, corresponding operations of selector 250 may be easily followed.

When the brushes of second selector 250 have been established in contact with the terminals of an idle connector 300, a circuit isV completed for impulsing relay 305 extending from grounded battery through the upper winding of said relay, lower normal contacts of relay 303, conductor 335, brush 233 and cooperating terminal, No. 4 front contacts of relay 212', thence as traced in a loop through the first selector 200, line-finder, members station, iirst selector 200, No. 3 front contacts of relay 212', brush 232 and cooperating terminal, conductor 336, top normal contacts lof relay 303, bottom Winding of relay 305 to ground. Relay 305 operates and completes an obvious circuit for relay 304 which operates and connects ground through its left outer contacts to the guard conductor 33'1, which, over brush 231 and the bottom outer front contacts of relay 212', serves to hold relays 212', 212 and 105 in an operated position.

The tens group of impulses is now automatically transmitted from the repertory dialing device 101, causing relay 305 to respond thereto but relay 304, being slow-to-release, remains unaffected. On the release of relay 305, in response to the rst impulse, a circuit is completed extending from ground through the back contacts of said relay, right front contacts of relay 304, normal contacts of the vertical off-normal springs 310, winding of relay 306, winding of vertical magnet 308 to grounded battery. Both relay 300 and magnet 308 operate in this circuit, thelatter stepping the brush shaft vertically one step so that the brushes 338 to 342 inclusive are in the plane of their respective first level of terminals. As soon as the brush `shaft leaves its normal position, the vertical offnormal springs 310 operate and the vertical magnet circuit is then completed through the winding of relay 306, front contacts of said relay, bottom alternate contacts of the vertical off-normal springs 310, right front contacts of relay 304 toground on the back contacts of relay 305.

The remaining impulses of the series for the tens digit now cause the operation of the connector 300 in the same way as the impulses of the previous two digits caused the operation of rst selector 200 and second selector 250, respectively, that is, by the response of relay 305 to the impulses and the opening and closing of the Vertical magnet circuit through the contacts of relays 304 and 300, both of which, being slow-release, remain in an operated position during the transmission of the impulses.

In the interval following the reception of the last impulse of the tens digit and the transmisvsion of the first impulse o-f the units digit, relay 305 operates, followed in turn by the release of relay 306. The repertory dialing device 101 now transmits the last series of impulses comprising the units digit and, on the opening of the line following the rst impulse, relay 305 releases as before and completes a circuit extending from ground through its back contacts, right front contacts of relay 304, lower alternate contacts of vertical off-normal springs 310, back contacts of relay 303, top inner contacts of relay 314, winding of relay 315 to grounded battery. A parallel circuit is further completed from the winding `of relay 315, top No. 1 contacts of relay 343, winding of rotary magnet 309 to grounded battery. Both relay 315 and rotary magnet 309 operate in these circuits, the former connecting brush 340 through its front contact and lower No. 3 contacts of relay 343 to the winding of relay 314 and the latter rotating the brush shaft one step so that brushes 33B to 342, inclusive, engage the rst set of terminals in their respective bank levels. At the end of the first impulse, relay 305 reoperates and causes the retraction of rotary magnet 300. Relay 315, however, being slow-release, does not release between impulses and continues to connect brush 340 with the winding of relay 314. Each succeeding impulse causes the release of relay 305 and the consequent operation of rotary magnet 309 whereupon, with each succeeding operation, the brush shaft is advanced a step and the brushes engage a succeeding set of terminals until, on the final impulse of the units digit, the brushes engage the set of terminals belonging to the wanted members line.

Atthe instant the line is seized and before` relay 315 releases, a test is made to determine whether the line is busy or free. If the line is busy, ground will be connected to brush 340 by virtue of another connector, similar to connector 300, being positioned on the line terminals. This ground comes from the No. 2 bottom contacts of relay 343 in the other connector, across the multipled terminals, to brush 340 and from thence a circuit is completed over the front contacts of relay 315, bottom No. 3 back contacts,

of relay 343, winding of relay 314 to grounded battery. Relay- 314 operates, opens the circuit of relay 315 and completes a busy tone circuit to the calling members station 100 extending from grounded battery through thesecondary of tone coil 312 of which the primary is connected to a source of tone current, condenser 323, bottom contacts of relay 3|4, condenser 344, conductor 335, brush 233 and thence over the selectors, linender and members station loop, back to brush 232, conductor 336, condenser 345, upper winding of relay 303, to grounded battery. This tone is induced in the circuit above traced, is heard by the member in the telephone receiver at station indicating to him that the line is busy, and that he should restore the receiver and then reestablish the connection after a suitable interval.

If the line is free, no ground will be connected to brush 340 and relay 3|4 will not operate. After relay 3|5 releases, therefore, a circuit is completed extending from ground over the left outer contacts of relay 304, top outer back contacts of relay 3|4, lower Winding of relay 343, back contacts of relay 3|5, brush 340 and associated terminal, winding of relay 325 and resistance 351 to grounded battery. This circuit causes the operation of relay 325, but the quantity of current is just suilcient to operate relay 343 to the extent of closing its bottom No. contacts, whereupon a locking circuit is completed for this relay to allow its full operation, said circuit being traced from ground on the left inner contacts of relay 304, bottom No. I contacts of relay 343, upper winding of relay 343, winding of rotary magnet 309 to grounded battery. The quantity of current flowing through this circuit while sufcient to insure the full operation of relay 343, is insuilcient to cause the operation of the rotary magnet. On operating, relay 343 connects the line conductors from second selector 250 through to the brushes 338, 339, 34| and 342 and further connects ground through its bottom No. 2 contacts to brush 340 to place a busy condition on the called line and further hold relay 325 in an operated position.

Relay 325, over its No. 4 and No. 5 front contacts, connects the called brokers line instrument 321 to the line conductors extending to brushes 34| and 342 preparatory to ringing on the line; over its No. 3 contacts and conductor 3|1, it completes an obvious circuit for the brokers line cut-off relay 403 which operates, said ground further extending over the right outer back contacts of relay 401 to conductor 408 which further extends to the guard terminal in the bank of connector 100 to guard the line against seizure over another channel as explained hereinafter; over its No. I and No. 2 contacts it prepares circuits for operating relays 362, 363 and 364. The functioning of these relays and a detailed tracing of their operating circuits will be discussed hereinafter.

The brokers station 321 will now be rung, due to the completion of an interrupted ringing circuit extending from grounded battery ringing current source 302, interrupter 324, top No. 4 contacts of relay 343, top winding of relay 334, bridged by the series path consisting of condenser 340 and resistance 348, top outer back contacts of relay 334, top No. 6 contacts of relay 343, brush 342 and associated terminal, No. front contacts of relay 325, conductor 341, through the station bell, conductor 346, No. 4 front contacts of relay 325, brush 34| and associated terminal, top No. 5 contacts of relay 343,

ltop inner back contacts of relay 334 to ground.

The alternating current owing through this circuit and causing the station bell to ring is not sufficient, however, to cause the operation of relay 334 so that this circuit isnot interrupted until the station answers, whereupon the bell is shortcircuited and the current then owing through the circuit, either alternating during the ringing interval or steady during the silent period, will cause relay 334 to operate, opening the ringing circuit, locking itself up through its lower winding and contacts to ground on the left inner contacts of relay 304 and, through its upper pairs of front contacts, joining the talking conductors to complete the conversational circuit between the members station |00 and the brokers station 321.

The removal of the receiver at station 321 in response to the call and the consequent operation of relay 334, further serves to operate the back bridge relay 303 which supplies talking battery to the brokers station, over a circuit extending from grounded battery through its top winding, top inner front contacts of relay 334, thence over the called loop as traced back to the top outer front contacts of relay 334, lower winding of relay 303 to ground. Relay 303 operates and reverses the direction of current ilow over the calling loop. This reversal of current may be used, if desired, to operate a registering device at the members station |00 to indicate the completion of the call. This registering feature, however, is not disclosed in the drawings because it is well known in the telephone art, it being mentioned to direct attention to the fact that if a call registration feature is required for traffic or other purposes, it may be incorporated ln any suitable manner for registering the completion of the call.

One of the objects in having a floor member call his brokers oce is to permit the transmission and confirmation of buying and selling orders that are to be executed by the member on the iloor of the exchange. Consequently, when a connection, such as the one described above, is established, it is usually for the purpose of transmitting such an order from the brokers oiiice and confirming it in Writing between the broker and the member. To consummate this end, each members booth in the exchange, in addition to having a telephone instrument and a repertory dial, is further provided with a receiving teletype device |50 which is capable of responding to the operation of a transmitting teletype device 360 at the brokers oce and record, on an electrically operated typewriter or similar device associated with the responding equipment |50, the message transmitted by the equipment 360'. This message will usually be an order such as to buy I. F. D. at 131A or sell 5. E. X. at the market or some other such instruction having to do with the purchase or sale of a security, coupled with whatever other miscellaneous information may be necessary for verifying the order such as, for instance, the time of the order, the salesman, etc.

Both the receiving equipment |50 and the transmitting equipment 360 are too well known in the telegraph art to require extended and detailed description here for a complete understanding of the invention, since equipment |50 is the usual "start-stop telegraph receiver coupled with a printer or electrical typewriter, and equipment 360 is the usual start-stop transmitter coupledwith a suitable typewriter keyboard. Because of the well-known character of equipments, they are only schematically indicated in -the drawings with only such circuit and apparatus elements disclosed as will be necessary The transmitting' circuit 360 at the brokersA office comprises the sending commutator with a revolving distributor arm 35| connected bya friction clutch (not shown) to a shaft which is coupledto the armature of a motor 301 or to the rotating element of any other suitable source of power, a start magnet 322 which serves to lock the distributor arm 35| against rotation, five sending bars 3|| which are positioned to makeV Contact with ve conductors each extending, respectively, to vesegments |-5 of the outer commutator with which the distributor arm can be engaged, ,and one conductor 353 which extends to segment 6 of said commutator and is connected to battery, preferably through one of the bars. These conductors are connected tothe bars in separate combinations depending upon the key depressed on the'keyboard 3|3 in, order to transmit a group of from one to five impulses according to the well-known five unit pulse code used in multiplex telegraph systems to indicate the character designated by the operated key.

At each of the member stations in the stock exchange, the receiving circuit |50 is shown as comprising a start magnet I|3, a commutator, five selecting magnets |2||25 connected to five separate segments of the outer commutating ring and adapted to set ar plurality of type bars (not shown) according to the combination` of magnets operated' by the distributor arm |42 as it revolves over the face of the commutator when driven from source of power ||8. A printer magnet |20 is connected to the segment |46 contiguousto segment 5 which is connected to receiving magnet |25 and operates to start the printing apparatus to print the character called for by the operated combination of receiving magnets. The printing equipment is notshown inasmuch as itis a well-known piece of apparatus and may be either of the typewriter or page printer variety depending upon commercial and traflic expediences.

With this preliminary explanation, the circuit operations by which, after the talking connection hasbeen established, a buying or selling order is transmitted from the brokers oice to the calling member station, may now be followed.

As soon as Vthe broker is ready to transmit the order; he depresses the key 'in the sending keyboard`3l3 which designates the first letter of the word he desires to transmit. This effects the closingv of the start key 3|6. The operation of the keyboardlkey sets one or more of the five bars V3|| in the appropriate combination required to transmit' the pulse code of the letter corresponding to the key depressed, which setting, in turn, causes grounded battery tobe connected vto those segments of the commutator which are connected by conductors to the operated bars. The operation of key 3| 6 completes a circuit for the start magnet 322 extending from grounded battery through the'contacts of said key, winding of magnet 322, the two inner brushes of vdistributor arm 35| and associated contacts of the commutator to ground. Magnet 322 operates and unlatches .the distributor. The power supply circuit for motor Sill, however, is closed through the top 'contacts of relay 362, which is `not operated at this time.

Withthe distributor arm in the Ynormal position, it'sup-per brush is in contact with segment 6V andv thissegrnent is, in turn, connected by way of conductor 353 to battery. Hence, a circuit is closedV while the distributor arm 35| is still engaged with segment 6, which extends from grounded battery over conductor 353, segment 6, two upper brushes of the distributor arm 35|, conductor 354, lower winding of relay 362, winding of relay 363, upper normal contacts of key 326, No. 2 front contacts of relay 325, brush 339 and associated terminal, top No. 3 contacts of relay 343, conductor 355, brush 230 and associated terminal, No. 2V contacts of relay 2|2' brush 224 and associated terminal, No. 2 contacts of relay 2|2, conductor |31, No. 3 contacts of relay |05, brush |30 and associated terminal,

winding of relay |\|9 to ground. Relay 362, 363 and ||9 operate in this circuit. Relay 362,v through its top contacts, connects the power supply to the distributor motor 301, which is started and causes distributor arm 35| to revolve over the face of the commutator. As the distributor leaves its normal position, the circuit of the start magnet 322 is opened, whereupon the latch arm is retracted to its normal position, ready to block the distributor after one revolution. Through its bottom contacts relay 362 connects grounded battery to the armature of relay 363 which, in operating, extends said battery to the armature of relay 364, said last relay performing no function at this time. Relay ||9 in operating closes an obvious circuit for relay which operates and locks in a circuit from grounded battery through its bottom winding and contacts, brush |29 and associated terminal, No. 2 contacts of relay |05, conductor |36, No. contacts of relay 2|2, brush 223 and associated terminal, No. contacts of relay 2|2, brush 229 and associated terminal, conductor 356, top No. 2 contacts of relay 343, brush 333 and associated terminal, No. l contacts of relay 325, lower normal contacts of key 326, winding of relay 364 and upper winding of relay 362 to ground. Relay 364 in operating extends the battery on its top front contacts to rconductor 366. Relay through its top inner contacts, closes the power supply to the motor ||8 which drives the distributor shaft, thereby operating the motor and rotating shaft but not affecting the distributor arm |42 which is latched in the normal position by the armature of start magnet ||3. The motor H8, as is the case in all telegraph systems operating on the startstop principle, revolves'at the same speed as motor 361 in the brokers telegraph equipment and the clutch mechanism of distributor arm |42 is so adjusted to the driving shaft as to cause said distributor arm to revolve about the face of the commutatorY at the same speed as distributor arm 35| of the sending circuit 366.

Now, so long as distributor arm 35| of the sending circuit 36|] is in contact with segment 6, the above traced circuit for relay ||9 is effective, but nothing further happens so long as distributor' arm |32 at the receiving equipment remains in contact with segment 6. When, however, distributor arm 35| has revolved beyond segment 6 and on to segment l, the operatingcircuit of relays I9, 362 and 333 is broken, whereupon relays ||9 and 363 release, but relay 362 remains operated in the locking circuit of relay Hl. The release of relay ||9 causes a circuit to be. cornpleted from grounded battery through the top outer contacts of relay top inner back contacts of relay |9, segment |43 of the commutator, brushes of the distributor arm |42, segment |43, winding of start magnet ||3 to ground. Magnet H3 Voperates and unlatches the distributor arm Cil |42 which now rotates around the face of the commutator. Inasmuch as the motor |,|8 Which rives distributor arm |42 runs at the same speed as motor 301 which runs the distributor arm it is clear that when distributor 35| has reached a position such that its outer brush makes contact with segment 1, distributor arm |42 will still be in contact with its normal segment. Hence when distributor arm |42 begins to move, distributor arm 35| will be in contact with segment 1, and by the time distributor arm 35| will have traveled over segment 1 and on to segment I, distributor arm |42 Will have traveled a corresponding distance. Its outer brush will be in contact with segment and its inner brush in contact with feed segment |45, which is connected to the inne-r front contact of relay ||9. Now if the key depressed at the keyboard 3|3 is that of a character such that its pulse code calls for a pulse in the first position. or segment battery will be connected rto segment I and thence to conductor 354, completing once more the previously described circuit for relay ||9 which now operates to extend battery from the top outer contacts of relay |1, inner front contacts of relay I I9, segment |45, distributor arm |42, segment I, winding of code magnet I2|, to ground. Magnet |2I operates and locks mechanically (in a manner not shown) in preparation to set the type of the character called for by the pulse code when all the pulses of the code have been transmitted. On the other hand, if the key depressed on the keyboard 3|3 is that of a character having a pulse code that does not call for a pulse in the first position, there will be no battery connected to segment I associated with distributor arm 35|, relay ||9 will not operate and no circuit will be closed for code magnet |2| at the time that distributor arm |42 is in contact with its associated segment I.

As the distributor arm 35| advances over segments 2, 3, 4 and 5, distributor arm |42 will revolve in synchronism with distributor arm 35| and advance over the corresponding segments 2, 3, 4 and 5 and the spacing segments between each of the numbered segments, the length of each numbered segment and its contiguous spacing segment being equal to the length of each of the numbered segments |5 accessible to distributor arm 35|. Now if, on the commutator associated with distributor arm 35|, battery is connected, by the setting of the keyboard bars 3|3, to any or all of the five segments, the circuit of relay I9 will be closed for such segments and the circuit for operating any of the corresponding magnets 2| to |25 inclusive will be again completed depending on the segment with which the distributor arm |42 is engaged at the time the battery is connected to conductor 354 by the distributor arm 35| engaging a correspondingly numbered segment. In this Way, the Ve unit pulse code of the character designated by the key depressed at the keyboard 3|3 is transmitted by the sending circuit 360 and received and recorded by the mechanically locked magnets |2|I25 of the receiver |50, which magnets were operated by the incoming impulses.

When distributor arm |42 engages segments |46 and I4? after it has left segment 5, a circuit is completed for the printer magnet |20 eX- tending from grounded battery, segment |41, brushes of distributor arm |42, segment |46, winding of printer magnet |20 to ground, operating said magnet which, in turn, operates the printing mechanism by which the character designated bythe combination of the operated code magnets |2|-'to |25 is printed on a paper strip. When distributor arm |42 has passed beyond segments |45 and |41, the circuit of the printer magnet |20 is opened, thereby releasing the printing mechanism and further unlocking the code magnets in the Well-known manner.

When the two distributor arms |42 and 35| have reached their normal segments, that is, segment |44 and segment 6, respectively, the sending and receiving circuits are ready to transmit and record, respectively, the character designated by the next key ldepressed on the sending keyboard 3|3 and results in the start magnet 322 being operated again to permit the distributor arm 35| to make another revolution, in turn causing the operation of start magnet |I3 to permit another revolution of distributor arm |42 for the purpose of operating the same or another combination of the code magnets |2| to |25 in accordance with the pulse code of the next character. `These operations continue until the entire message is transmitted and recorded, after which the contacts of key 3|6 remain open, ef-

fecting the release of start magnet 322 which, in

its normal position, latches distributor arm 35| and prevents any further rotation. With distributor arm 35| normal, since no more impulses are transmitted, no circuit is available to operate start magnet ||3 Which latches distributor arm |42 in the normal position.

The discussion hereinbefore given described how the receiving distributor |42 at the members station, in cooperation with the line relay 9, received and printed a message transmitted by the sending distributor 35| at the brokers station. Since the winding of relay 363 is in series with the winding of the relay ||9, relay 363 responds in unison with relay I9 and connects battery to conductors 366 and 368 alternately to cause the distributor arm 361 of receiver 350 at the brokers station to function in the same manner as distributorarm |42 at the members station, and to print the same message, thereby providing for the brokers station a record of the outgoing transmission. During the sending of the message, although the current through the lower winding of relay 362 is interrupted, this relay remains steadily operated over the circuit before traced, through its upper winding and the winding of relay 364. Y

When conversation between the parties is terminated and the receiver is restored at station |00, the circuit of relay 305 is opened causing said relay to release, followed, after an interval, by the release of relay 304. The release of relay 304 unlocks relays 334 and 343 whereupon brushes 338 to 342 are disconnected causing thereby the release of relay I I1 at the members station which opens the power supply to the distributor shaft motor ||8, and'further causes a circuit for release magnet 320 of the connector 300 to be closed, said circuit extending from grounded battery through thewinding of said magnet, top contacts of vertical off-normal springs 3|0, bottom No. contacts of relay 343, back contacts of relay 304, back contacts of relay 305 to ground. Release magnet 320 operates in this circuit and restores the brush shaft to normal. The release of relay 343 further opens the circuit of relay 325 which releases. The release of relay 325, opens the circuit of the members line cut-ofi relay 403, and the circuit of relays 362, 363, 364, ||1 and ||9 al1 of which release. With the release of relay 403 ground is disconnected from conductor 408 thereby removing the busy condition from the line terminals in the connector banks accessible over the switching trains from the common station and the report station; the release of cut-off relay 403 reconnects the brokers line relay m2 in readiness to respond to the initiation of a call as more particularly described hereinafter, while the release of relay 362 disconnects the power supply from the motor 301 causing the distributor arms 35| and 361 to stop.

Upon the release of relay 301i, groundis removed from conductor 331 the effect o'f which is to remove ground from brush 231, causing thereby the release of relay 2|2 in second selector 250 whereupon a circuit is completed for release magnet 2033 extending from grounded battery through the bottom contacts of vertical ofinormal springs 2H', top back contacts of relay 206, back contacts of relay 2li l bottom outer back contacts of relay 212 to ground. Release magnet 203 operates and restores the switch shaft to normal.

By the removal of ground from brush QSI, relay 262 of the rst selector 2M likewise releases and, by the completion of aV circuit for release magnet 2li3 similar to that of release magnet 203 in the second selector 250, said magnet operates and restores the brush shaft to normal.

With the release of relay 2l2, ground is disconnected from conductor Ml whereupon relay H15 releases and a circuit is completed for release magnet IH extending from grounded battery through the winding of said magnet, lower con- I, tacts of vertical off-normal springs M8, bottom inner back contacts of relay IBS, bottom outer back contacts of relay H35, top b ack contacts of relay 01, upper alternate contacts of vertical oit-normal springs N33 to ground. Release magnet l! l operates and restores the finder brush shaft to normal. Relay IBS -may, however, remain operated if, at this time, relay IEM is operated as the result of another call having been started from another member station, in order not to disturb the starting of a succeeding finder which operates to find the second calling line. When such a line has been found, relay |04 releases as already described, causing in turn the release of relay Hi8, thereby restoring the entire circuit to normal.

Having described in detail the establishment of a connection between a members station in the exchange and the brokers office, I will now describe, in general terms, the establishment of connections, (d) from the common station shown in Fig. 4 to all the outlets available to said station, (bi) from the report station shown in Fig. 5 to all outlets available to said station, and (c) from the brokers cnice to all outlets available to said cnice. I will then further show how, by means of my invention, it is possible to page a floor member directly from the brokers oflice.

Considering first the establishment of a connection from the common station MJU, the removal of the receiver from the switch-hook causes the operation of the lin relay 402 and the operation of relay Mii', both of which relays are identical in function, respectively, with the line relay H12 and the group relay lult of the member station equipment shown in Fig. l. This last relay, that is, relay 404' initiates the operation of the line-under, which is only schematically indicated on the drawings since it is identical in construction with the line-finder shown in Fig. 1, whereby the vertical magnet operates to step the brush shaft to the level of terminals coincidental with the segment on commutator 421', grounded by the contact of relay fllt and thereafter causes the operation of the rotary magnet to rotate the brush shaft into connection with the calling line terminals, after which relay 405' opcrates and extends the line and its associated apparatus to the iirst selector Stil'.

Relay tti then operates over the line loop and responds to the impulses transmitted from the telephone dial. Now, if the person using the common station desires to reach the ticker delay announcer, then, according to the trunking plan outlined in Fig. 8, he dials the digit 2, whereupon the brush shaft carrying brushes i523 to 621, inclusive, is stepped to the second bank level under the influence of vertical magnet 601 and then rotated automatically under the iniluence of rotary magnet @i3 to the rst set of idle terminals extending to the ticker delay equipment. The service rendered over this apparatus may be of any suitable type, either manual or automatic, such as, for instance, a regular manual position over which the announcement may be given by an operator, or oi the magnetic tape-recording type shown and described in the Patent 1,944,238 to C. N. Hickman, or oi the call announcer type such as that described in my own Patent No. 1,992,271.

Should the party desire to reach the quotation announcer, then he dials a three or four digit code depending upon the number of securities for which this service is to be given except that, according to the preferred trunking plan shown in Fig. 8, the first digit is either an 8 or a 9, whereupon the impulses of' the first digit will set the brush shaft of the rst selector d on the 8th or 9th level ci" terminals, from which they are rotated into contact with an idle set of terminals extending to a second selector. The second digit will then set the brush shaft of said second selector on the level of terminals determined by the impulses of the second cligitand the brush shaft is then rotated to an idle set of terminals in this level extending to a connector. The brushes of the connector are then raised to the terminal level determined by the tens digit of the stock code and further rotated to the set of terminals in that level determined by the units digit of the stock code.

As in the case of the ticker delay service, the quotation announcing facilities may be of the manual type with an operator giving the quotations desired, or of the magnetic tape-recording type described in the above-mentioned patent to Hickman or it may be o the call announcer type described in my above-mentioned patent.

Should the party using the station dit@ desire to reach the operator, then he dials the single digit 0. The ten impulses produced by the dial will cause the brush shaft to be stepped to the tenth vertical level and then rotated automatically to the first set of idle terminals extending to an cperators position.

If the party using the common station desires to communicate with his own brokers oflice or with some otherbrokers cnice on matters not involving secrecy, he dials the oflice number which, according to the trunking plan` of Fig. 8, be a four digit numberhaving 5, 6, or 7 as the iirst digit, since the trunks from the first selectors over which connections to brokers. lines may be extended are located on the 5th, 6th and '1th levels of terminals.

Let us assume that the party desires to call the brokers line 321 shown as terminating in Fig. 3. He dials the number inthe usual way and the iirst and second selectors 500" and 555 are positioned, respectively, to reach the connector E) which is identical in construction and design to the connector 350. After the connector is set on the line terminals in the manner described for connector 350, relay 143 operates in a circuit which extends from ground through the left outer contacts of relay 104i, top outer back contacts of relay 1 I 4, lower winding of relay 143, bottom back contacts of relay 1l5, brush 140 and associated terminal, conductor 508, outer back contacts of relay 451, winding of cut-oir relay 403 togrounded battery. Both relays 143 and 403 operate. Relay 453, at its right contacts, disconnects the windings of the line relay 402 while through its left inner contacts it connects ground tov conductor 33! which extends through the bottom contacts of relay 325 to a point between resistance 351 and the winding of relay 325, thereby marking as busy the sleeve terminals of the called brokers line 321 in the banks of the connectors 300 which have access thereto. Relay 143 operates and causes the line conductors to be Yextended to connector e. Station 321 is then rung over conductors 158 and 159 through No. 4 and No. 5 back contacts of relay 325 in the usual way and,

when the receiver is removed from the hook, relay 134 operates to complete the talking connection.

rlhe commonv station, like the private members station, is equipped with a printer receiving device 450 similar in every respect with the printer receiving device 50, either of which will operate in conjunction with the sending equipment 360 at the brokers oliice for the purpose of receiving written orders, confirma-tion, etc., and the circuit operations between the brokers oice and the common station to control the sending and receiving equipment 350 and 455 respectively is the same as before described for the control of the sending and receiving equipment 350 and |50 and, therefore, need not be described again.

When all business between the party using the common station and the membersoilice is terminated, the party restores the receiver and the apparatus restores to normal as before described for the members station.

The report station shown in Fig. 5, is for the purpose of providing floor members with facilities for reaching the various brokers oiiices in order to confirm sales or other business requiring written evidence of transactions and for which no secrecy is necessary. For this reason it is provided both with a telegraph transmitter 560, which is similar to the transmitter 365 at the brokers cnice, and a telegraph receiving printer 55B, which is similar to the receivers IE5, 355 and 450. This station, according to the trunking layout of Fig. 8, has accessibility through the first selector directly to the ticker delay service and to the operator while, through the second selectors 555 available to the common station it can reach any of the brokers. oiiices by dialing of their respective numbers.

Assuming, therefore, that a fioor member desires to make a written report, and that the oice to which the report is to be made is the one indicated by station 321, he removes the receiver from the switch-hook and dials the brokers number, whereupon the rst and second selectors and connector are positioned to connect the report station with the brokers station in the manner previously described for the common station.

' Assuming that the established switching train from the report station 550 to the brokers station 321 comprises the line-iinder 5I0, rst selector 600, second selector 655', and the connector 100, then, as soon as said connection is established, a circuit is completed extending from battery over conductor 533, segment 6 of the commutator of transmitter 550, upper brushes of distributor arm 55I, conductor 554, winding of relay 5i9, brush 530 and associated terminal of line-under 5I0, No. 2 contacts of relay 505, conductor 535 through the contacts of a relay in first selector 005 corresponding to relay SI2 in first selector 655', brush 623 and associated terminal in second selector 653', No. I contacts of relay SI2', brush 629 and associated terminal, conductor 155, upper No. 2 contacts of relay 143, brush 138 and associated terminal, conductor 151, No- I back contacts of relay 325, lower normal contacts of key 326, winding of relay 364, upper winding of relay 362 to ground. Relays 362, 360 and 5I9 operate. As before, relay 362 connects the power supply to the distributor motor 351 which is started, but since no keys are depressed in keyboard BIS, key 3I6 is normal and distributor arm 35i remains latched to the arman ture of start magnet 322. Furthermore, there is at present no circuit for operating start magnet 321 of the receiver 350 so that while motor 301 is in operation distributor arm 361 likewise remains in its normal position.

At the report station, relay 5I9 closes an obvicus circuit for relay 5I1 which locks over its lower winding in a circuit which extends from ground through the lower winding and lower contacts of said relay, brush 529 and associated termina-l on line-iinder SIG, No. 3 contacts of relay 505, conductor 531 contacts of a relay in iirst selector 559, similar to relay SI2 of first selector 500', brush 624 and associated terminal in second selector 650', No. 2 contacts of relay SI2', brush 630 and associated terminal, conductor 155, No. 3 contacts of relay 143, brush 139 and associated terminal, conductor 151, No. 3 back contacts of relay 325, upper normal contacts of key 325, winding of relay 353, lower winding of relay 362, segment 36| of the commutator associated with transmitter 350, upper brushes of distributor arm 35|, segment 6 of said commutator, conductor 353 to battery.

Relay 5I1, on operating, completes the power supply circuit to distributor motor 5I8 and thereby causes the distributor shaft associated with its armature to rotate. Distributor arms 55I and 552, however, are latched to their respective start magnets 522 and 5H so that nothing further occurs until the person using the report station is ready to key the message he wishes to transmit upon the sending keyboard 5I3.

The operation of any one of the keys upon said keyboard 5I3 closes the start key 516 while the operated letter or number key on said keyboard further sets one or more of the ve bars 5II in the appropriate combination required to transmit the pulse code of the letter or number corresponding to thekey depressed, which setting, in turn, causes grounded battery to be connected to the segments of the commutator connected by conductors to the operated bars. The operation of key 5I6 completes a circuit for start magnet 522 extending from the grounded battery through the contacts of said key, winding of magnet 522, the two inner brushes of distributor arm 55| and associated contacts of the commutator, to ground.

Magnet 522 operates, unlatches the distributor loY 'arm 55| and causes it to make one revolution. When the distributor has advanced to segment 1, the circuit of relays I9, 364 and 362 is broken, whereupon relays 5I9 and 364 release. Relay 5I9 completes a circuit for start magnet 5II extending from grounded battery through the top upper contacts of relay 5 I 1, outer back contacts of relay 5I9, segment 543 of the commutator, the two brushes of distributor arm 542, segment 544 of the commutator, winding of magnet 5II to ground. Magnet 5II operates and unlatches distributor arm 542 which now begins to revolve around the face of its associated commutator. Hence, by the time distributor arm 55I is engaged on segment 1, distributor arm 542 is leaving its normal position. In the meanwhile, the release of relay 364 completes a circuit from ground through the winding of start magnet 321 of receiver 356 at the brokers office, segments 328 and 329 of the commutator, the brushes of distributor arm 361, conductor 368, top back contacts of relay 364, fro-nt contacts of relay 363, to grounded battery through the bottom contacts of relay 363. Start magnet 321 thus operates, unlatches the distributor arm 361 and causes said distributor arm to rotate one complete revolution. Now since the circuit of start magnet 5I I of the receiver 556 at the report station and the circuit of start magnet 521 of the receiver 350 at the brokers oiice are closed at the same time, and since motors 5I and 361 are in synchronism, distributor arm 542 and distributor arm 361 will engage the corresponding segments of their associated and respective commutators at the same time, and as distributor arm 55| advances to segment I by the time distributor arms 542 and 361 reach their own respective segments I, it is clear that'if a battery condition prevails on segment I of the commutator associated with distributor arm 55|, the consequent'closure of the circuit of relays 5I9 and 364 (as will be described shortly) will effect the operation of these relays which, in turn, will apply battery to the corresponding segments of the commutators associated, respectively, with distributor arms 542 and 361. Hence if a key in the keyboard 5I3 has been depressed and the code of the character calls for a battery pulse over the first segment of the commutator associated with transmitter 563, segment Iwill have battery connected to it by the fact that the bar which is controlled by the key will have been placed in contact with the conductor extending between the segment and the bar. Therefore, when distributor arm 55! is on segment I and distributor arms 542 and 361 are likewise on their respective segments I, an impulse circuit will be completed which extends from' grounded battery through the bar and segment I of transmitter 560, circular segment 56|, conductor 554, and thence as previously traced through the windings of relays 5I9, 364 and 362. Relay 519 operates and connects battery to segment l545 of `its associated commutator which, in turn, completes a circuit through distributor arm 542 resting upon segment I, winding of the rst pulse magnet 52I to ground. Concurrently, relay 364 also completes a circuit for a corresponding pulse magnet in receiver` 350, which circuit extends from battery on the lower contacts of relay 362, front contacts of relay 363, front contacts of relay 364, conductor 366, circular segment 332, brushes of distributor arm 351, segment I, winding of the iirst pulse magnet to ground. Thus, if the letter or number designated by the key depressed at keyboard 5I3 is one which calls for a pulse in the iirst of the ve positions of a iive unit code, this pulse will cause a pulse magnet to be operated in the report station receiver 55D and a corresponding pulse magnet in the receiver 35|] of the brokers oice.

In the same mann-er, as the three distributor arms 551, 542 and 361 continue to rotate through a single revolution, the segments on the commutator associated with transmitter 566 which have battery connected to them through the bars set by the depressed keys at keyboard 5I3 Wlill cause corresponding pulses to be transmitted over conductor 554, which will set the pulse magnets of receiver 556 and corresponding pulse magnets in receiver 356 for printing the character corresponding to the key both at the report station 500 and at the brokers oice 321 when the printer magnet 525 of receiver 550 and printer magnet 333 of receiver 355 have been operated at the time that the distributor arms 542 and 361 have reached segments 541 and 3I8, respectively. In this manner, as each key is depressed in keyboard 5I3, the character designated by the key is printed at the report station and also at the brokers oice. The message, therefore, is not only transmitted and printedv at the brokers oice by the receiver 356 but a copy of it is also printed by receiver 555 at the report station.

The disconnection of the apparatus, when the telephone receiver is restored at the report station 566, is identical with the release of similar apparatus` used in establishing a connection from member station H13. Inasmuch as these operations have already been described, there is no necessity of unduly lengthening this description by further detailing circuit voperations which can be easily followed from what has already been said.

I will now describe, brieiiy, the manner in which a broker, such as, for instance, the broker represented by station 321, may establish a connection to any other broker or t-o any of the service outlets such as, for instance, the operator, the quotation announcer or the ticker delay. In removing his receiver from the switch-hook a circuit is completed for line relay 402 which extends from` grounded battery through the left winding of relay 432, right inner contacts` of cutoff relay 463, conductor 4I, No. 5 back contacts of relay 325, conductor 341, through the telephone instrument 321, conductor 346, No. 4 back contacts of relay 325, conductor 459, right middle contacts of relay 433, right winding of line relay 452 to ground. Relay 452 operates and initiates the operation of a relay 4611v which grounds the particular segment on commutator 421. that designates the level of terminals in the linender represented by relay 435 to which the brokers line is connected. The line-nder elevator shaft, as a result oi circuit operations similar to those already described for the operation of the line-iinderhaving access to the member station 166, is then caused to be raised and rotated to the terminals of the brokers line, thereby extending his line through contacts of relay 405 to the first selector 666, whereupon cut-orf relay 433 is operated in the usual Way and line relay 402 is released. Now, depending upon the digit code dialed by the broker, the brush shaft of the first selector switch 665 may be caused to be connected with the ticker delay equipment or to an operators position, or to the quotation announcer through a switching train comprising a second selector and a connector as previously described. Should he desire to communicate with another broker, the first selector switch 596 is, of course, advanced into connection with a second selector 550 depending upon the first digit oi the wanted 'brokers number, and the second selector will then locate an idle connector, such as connector 632i, which, in response to the third and fourth digits of the brokers line number will advance its brush shaft to the terminals of the wanted brokers line in the same straightforward operation as previously described for the common station.

While the outline of connections above given is not intended as a description of the various detailed operations required for the setting of each oi the selectors mentioned, it is believed that no such description is necessary in View of the detailed description already given of the operation of the iirst and second selectors involved for connections previously described.

Should the broker 32T desire to page a member on the floor oi the exchange, it will only be necessary for him to depress key 32d. When this key is depressed, a circuit is closed for relay which extends from grounded battery through the winding of said relay, left outer contacts of cut-off relay 403, conductor ll I, No. 1 back contacts of relay 325, bottom alternate contacts of key 326, through the brokers telephone station, conductor llll, upper alternate contacts of key 326, No. 2 back contacts of relay 325, conductor H3, left inner contacts of cut-off relay 403, to ground. Relay il operates, connects ground to a lamp in the floor indicator iii 2 to flash the number of the member on the indicator board,

'and further connects ground to conductor M48,

which extends to the test terminals of the brokers line on the connector banks of the channels including connectors 'l and 536 to establish a busy condition for the calling line. The floor member, after noting his number flashed upon the indicator, proceeds to any one of the member stations to call the brokers cnice, which connection is established in the manner previously described over the secret channel disclosed .by the apparatus shown in Figs. l, 2 and 3.

The terminal of the line accessible to connector S is, of course, not made busy by the operation of the floor indicator key 326 so that once the connection is established from the member station, relay 325 is operated in the manner described, the circuit for relay 4H is disrupted at its contacts and the door indicator lamp is eX- tinguished to indicate that the member has been successfully paged.

What is claimed is:

1. In a communication system, a first station having a telephone instrument and a telegraph transmitting instrument, a second station having a telephone instrument and a telegraph receiving instrument, and means for automatically establishing a communication circuit between said telephone instruments and a signaling circuit between said telegraph instruments independent of said communication circuit.

2. In a communication system, a rst station having a telephone instrument and a telegraph receiving instrument, a second station having a telephone instrument and a telegraph transmitting instrument, and means under the control of said rst station for automatically and simultaneously establishing a communication circuit between said telephone instruments and a signaling circuit between said telegraph instruments independent of said communication circuit.

3. In a communication system, a rst station having a telephone instrument and a telegraph instrument, a second station having a telephone instrument and a telegraph instrument, an indicating device individual to said rst station, means responsive to an operation at said rst station for operating said indicating device, means for establishing automatically and simultaneously a communication circuit between the telephone instruments of said two stations and a signaling circuit between the telegraph instruments of said two stations independent of said communication circuit, and means responsive to the establishment of said circuits for retiring said indicating device.

4. In a communication system, a first group of stations, each of said stations having a telephone instrument and a telegraphic transmitting device, a second group of stations, cach of said stations of said second group having a telephone instrument, a key-controlled dialing device, and a telegraphic receiving device, and means responsive to the application of a particular key to a key-controlled dialing device of any station of said second group for establishing independent telephonie and telegraphic circuits between said station and one particular station of said first group.

5. In a communication system, a first group of stations, each of said stationsv having a telephone instrument, a key, and a telegraphic transmitting device, a second group of stations, each of said stations in said second group having a telephone instrument, a key-controlled dialing device, and a telegraphic receiving device, a display board having a signal for each of said stations in said first group, means responsive to the operation of said key at a station of said rst group for operating its identifying signal in said display board, means responsive to the application of a key identifying said calling station in the rst group to the key-controlled dialing device of any station in the second group for establishing simultaneous connections between the telephones of said two stations and the telegraph instruments of said two stations, and means responsive to the establishment of said connections for extinguishing said signal on said display board.

6. In a signaling system for simultaneous telegraphy and telephony, a plurality of stations, directive switches for extending two independent connections between any two of said stations over the same switch train, means for telegraphing over one of said connections, and means for telephoning over the other of said connections.

7. In a signaling system for simultaneous telegraphy and telephony, a plurality of stations, directive switches for extending two independent connections between any two of said stations over the same switch train, a telegraphr transmitter and a telegraph receiver at one of said stations, a telegraph receiver at the other of said stations, means responsive to the operation of said transmitter and operative over one of said connections for operating both of said receivers, and means for telephoning between said two stations over the other of said connections.

8. In a signaling system for simultaneous telegraphy and telephony, a plurality of stations, directive switches for extending two independent connections between any two of said stations over the same switch train, a telegraph transmitter and a telegraph receiver at each of said stations, means for telephoning between said two stations over one of said connections, and means includ- 

